Folding box.



C. P. JENKINS.

FOLDING BOX.

Prummel HLM) un; ze, 190e.

. Patented Nov. 23, `19.09j

AVA A nventoz dname; 4

UNITED sTATEs PATENT carros. y

CHARLES FRANCIS JENKINS, OF WASHINGTON, DISTRICT OF COLUMBIA, I

FOLDING BOX.

Specification of Letters Patent.

Patented Nov. 23, 1909.

Application `filed January 26, 1909. Serial No. 474,217.

l lapsible boxes havin walls stiff enough to protect frangible or ragile articles of merchandise, and the general objects are to provide at low cost a convenient and unusually rigid box without detachable parts which when collapsed may lie flat; which may be conveniently and quickly changed from its collapsible condition into box form; and which when so changed may be closed and sealed as readily as a letter envelop.

The material of the box is not invariable,

' andv certain changes may be made in construction, but for the purpose of illustration I have shown a box having two ends, or smaller walls, simple plane plates and the remaining walls of stock made by securing plane paper sheets upon both faces of a sheet of corrugated paper, each of these constituent layers being of a thickness corresponding to the strength desired.

In the accompanying drawings: Fi re l is a plan view of the box structure 1n flat form. Fig. 2 is a section on the line 2-2,

Fig. 1. .Fig 3 is a cross section of the formed box, with its cover partly open. Fig. 4 Ais a like view, the box being closed and sealed.

In these views, A represents a sheet or layer of paper of a width equal to the length of the desired box, andof a length equal to the circumference of the completed box; B, a corrugated layer of equal width and length; and C, anouter layer of the same Width but having a free end or sealing flap C projectingA beyond the other layers, the three layers being cemented together in the usual way.

At a short distance from each lateral edge of the compound sheet a narrow groove D, parallel to the edge, is formed, preferably by sawing through or nearly through the layers A and B, and the flap C is provided with gum C2 or the like. The sheet or layer A is cut along one side ot the corrugations in which the compound sheet folds in forming the box, and when the tu'o parteI spectively, of the box.

fold the freed part V of the plane sheet covers the crevice in the angle. The portions E, E', E2, E3 between the bending lines serve as the bottom, sides and top, re-

End plates X are then inserted in the grooves at opposite ends of the section E and secured thereto by hinges F which maybe of cloth or tough paper. These ends are then folded inward to lie flat upon E, as in Fig. 1, and the box is ready for shipment' or storage.

IVhen the box is to be used, the ends are.

swung to planes perpendicular to E, their margins being thereby inserted in the grooves therein, the sections E, E2 are swung upward l90" to receive in their grooves the lateral margins of the ends, respectively, and the box is ready to receive its contents. The cover E3 is then folded down, bringing its grooves into engagement with the upper margins of the ends, and the flap C being moistened is drawn down and pressed upon the outer face of the section E, securely sealing the box, which obviously needs noy other Wragpings.

It may e observed that the flap not only holds the box closed, but effectively prevents opening the box without making it evident that it has been opened. It may also be noted that the ends of the box are protected by the projecting ends of the our side walls, and that the closed box bears very rough treatment without injury to the box or contents, each box being capable of resisting heavy pressure or blows, even when ap lied diagonally.4 W'here goods are packed 'in arge quantities in boxes of the same size,

instead of providing a stock of collapsible boxes of various sizes, as is done with paper bags in retail establishments, the boxes may be made and at once filled, and in this case it is quite practicable toglue the ends in all the grooves, thereby increasing the rigidity and vmaking it impossible to open the box without seriously mutilating parts other than the flap.

Obviously the form and relative dimensions of the box may be varied without passing the limits of my invention, the terms ends and sides as herein used not necessarily indicating relative size.

lVhat I claim is:

l. A paper box consisting of a side wall member adapted to toldalong parallel transverse lines to form a box body and a securing tlap, and provided upon its inner face of said sections alongsi in position to fold fiat upon the same and to near each of tW'o' opposite mar ins with a groove perpendicular' to its fo ding lines,- and end members each hingedat one side to the wall member between consecutive fold. ing lines to swing into and out of the adjacent groove.

2. A box consisting of a Side wall of four lfoldably connected sections, each trans# versely O'rooved near its end to receive end Walls, ofj two end walls each hinged to one de one of its grooves swing upon an axis parallel to the groove into and out of its groove.

3. A paper box consisting of a side wall member made up of a sheet having substantially uniform parallel corrugatins with plane sheets cemented to both faces withl one planesheet projecting at a side parallel to the corru ations to 'form a gummed a said mem er being grooved near its en s upon the side of the non-projecting sheet, and end members each hinged on one side to the side wall member to swing into and` out of the adjacent groove.

4.v A paper box structure, adapted to lie' flat, or to be folded into closed box form,

consisting of a rectangular corrugated sheet faced with plane paper and grooved across the-f corrugations, near' each end,' and two end plates each hinged at one side to said sheet alongside the corresponding groove to swing u on an axis arallel thereto into and out of t e same, su stanti'ally as set forth.

5. A box structure', having its body made up of a corrugated sheet'faced with plane paper and grooved near each end, across the corru ations, to receive end pieces, of two end p ates hinged at Qneside to said body in position to swing into and out of the adjacent groove; one of the non-grooved sides of the body being provided with a project-v CHARLES FRANCIS JENKINS.

Witnesses: l

JAMES L. CRAWFORD, WALLACE GREENE. 

